#7EBCD2

CSS

:root {
  --dolphin: #7ebcd2;
  --dolphin-rgb: 126 188 210;
  --dolphin-oklch: oklch(0.761 0.071 222.3);
}

.element {
  color: var(--dolphin);
  background-color: hsl(196 48% 66%);
  border-color: oklch(0.761 0.071 222.3);
}

Tailwind CSS v4

@theme {
  --color-dolphin: #7ebcd2;
  --color-dolphin-50: #e1faff;
  --color-dolphin-100: #d0eefa;
  --color-dolphin-200: #b5dbeb;
  --color-dolphin-300: #90c0d3;
  --color-dolphin-400: #6ea8bd;
  --color-dolphin-500: #4c91a8;
  --color-dolphin-600: #417a8e;
  --color-dolphin-700: #346272;
  --color-dolphin-800: #244853;
  --color-dolphin-900: #18323a;
  --color-dolphin-950: #081e24;
}

SCSS

$dolphin: #7ebcd2;
$dolphin-rgb: 126, 188, 210;
$dolphin-light: mix(#fff, $dolphin, 20%);
$dolphin-dark: mix(#000, $dolphin, 20%);

.element {
  color: $dolphin;
  box-shadow: 0 0 0 2px rgba($dolphin, 0.35);
}